83660574505 has 16 divisors (see below), whose sum is σ = 106316893440. Its totient is φ = 62980379392.

The previous prime is 83660574493. The next prime is 83660574523. The reversal of 83660574505 is 50547506638.

It is a cyclic number.

It is not a de Polignac number, because 83660574505 - 2¹³ = 83660566313 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 414816 + ... + 582574.

It is an arithmetic number, because the mean of its divisors is an integer number (6644805840).

Almost surely, 2^83660574505 is an apocalyptic number.

83660574505 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

It is an amenable number.

83660574505 is a deficient number, since it is larger than the sum of its proper divisors (22656318935).

83660574505 is a wasteful number, since it uses less digits than its factorization.

83660574505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 173648.

The product of its (nonzero) digits is 3024000, while the sum is 49.

The spelling of 83660574505 in words is "eighty-three billion, six hundred sixty million, five hundred seventy-four thousand, five hundred five".